(2014·山东省实验中学一模)—Have you graduated from Shandong University?—Yes.I________there for 4 years.
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A
studied 
B
have studied
C
had studied 
D
have been studying
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Dr. Smith, together with his wife and daughters, _____visit Beijing this summer.
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A
is going to
B
are going to
C
was going to
D
were going to
The Food and Drug Administration      that anyone who      too much the drug suffer side effects.
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A
warned; took; will
B
has warned ;takes; may
C
warns; took; must
D
has warned; will take; need
---Can I help you, sir? ---Yes. I bought this radio here yesterday, but it _____. 
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A
didn't work
B
wouldn't work
C
can't work
D
doesn't work
  By the end of this year, we _____ 2000 English words.
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A
will learn  
B
would learn
C
have learned
D
will have learned
 I_______ while reading the English textbook. Luckily , my roommate woke me up in time!
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A
fell asleep
B
had fallen asleep
C
have fallen asleep
D
fall asleep